kwin compositing + mplayer VDPAU crash

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Hello everyone, I have a very specific problem with KDE and mplayer video playback.If I'm using vdpau as video output in mplayer and I switch to fullscreen mplayer will hang if anything is drawn on top of the video output. It happens if I show the control bar in smplayer or if I open yakuake or if I receive a skype notification.There are three things that can prevent the crash:- Using xv instead of vpdau (but 1080p playback becomes a pain)- Disable "unredirect fullscreen windows" in kwin (but it kills the performances of games)- Disable compositing before switching to fullscreen
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